use prism-tomorrow.css

docs/_style/prism-master/components/prism-css-extras.js

@@ -0,0 +1,31 @@
+Prism.languages.css.selector = {
+	pattern: Prism.languages.css.selector,
+	inside: {
+		'pseudo-element': /:(?:after|before|first-letter|first-line|selection)|::[-\w]+/,
+		'pseudo-class': /:[-\w]+(?:\(.*\))?/,
+		'class': /\.[-:.\w]+/,
+		'id': /#[-:.\w]+/,
+		'attribute': /\[[^\]]+\]/
+	}
+};
+
+Prism.languages.insertBefore('css', 'property', {
+	'variable': {
+		pattern: /(^|[^-\w\xA0-\uFFFF])--[-_a-z\xA0-\uFFFF][-\w\xA0-\uFFFF]*/i,
+		lookbehind: true
+	}
+});
+
+Prism.languages.insertBefore('css', 'function', {
+	'operator': {
+		pattern: /(\s)[+\-*\/](?=\s)/,
+		lookbehind: true
+	},
+	'hexcode': /#[\da-f]{3,8}/i,
+	'entity': /\\[\da-f]{1,8}/i,
+	'unit': {
+		pattern: /(\d)(?:%|[a-z]+)/,
+		lookbehind: true
+	},
+	'number': /-?[\d.]+/
+});